play president obama in mock debates. he was reportly on the short list for romney's vice presidential picks. he served in the same role for mccain in '08. >>> new details about that powerful earthquake that rocked costa rica. you can see the surveillance cameras shaking violently there. the 7.6 magnitude quake was centered 90 miles west of the capital san jose. officials say it collapsed some houses, a bridge, and caused landslides. authorities reported two confirmed deaths. the quake triggered a tsunami alert. >> national transportation safety board released its preliminary report on a train derailment that killed two young women in maryland last month. the report says the train was traveling at 25 miles per hour, which is the set limit in that part of ellicott city. the 19-year-olds were sitting on the train overpass when the train derailed. the report does not say what caused the incident. it could take up to a year to determine the cause. >> the air is heavy out there. talk about humidity. definitely still feels like